Google will now count all Android backup data toward your storage cap

Fortunately, it shouldn't take too much extra space.
Newspoint on MSN

Google updates Android backup rules: Here's how the new storage policy affects your 15GB free space

Google has introduced a significant update to the way Android backups are stored, and the change could impact how users ...
9to5Google

All Android backup data now counts toward your Google Account storage, but it won’t take up much space

Google is making a policy change to Android backups that adjusts what counts towards your Google Account storage.